Aviation Accident Summaries

Aviation Accident Summary DEN92FA089

BAYFIELD, CO, USA

Aircraft #1

N911NM

BELL 206L3

Analysis

WHILE ATTEMPTING TO LAND IN ROUGH, ROCKY MOUNTAINOUS TERRAIN DURING A MEDIVAC FLIGHT, AT A PRESSURE ALTITUDE OF 9,830 FT, LOSS OF TAIL ROTOR EFFECTIVENESS OCCURRED, AND THE HELICOPTER DESCENDED RAPIDLY AND CRASHED ONTO ROCKS. THE HELICOPTER WAS OPERATING IN A PERFORMANCE LIMITED PORTION OF THE HOVER PERFORMANCE CHART AT THE TIME OF THE ACCIDENT.

Probable Cause and Findings

FAILURE OF THE PILOT-IN-COMMAND TO PROPERLY USE THE HELICOPTER'S PERFORMANCE DATA. FACTORS WHICH CONTRIBUTED TO THE ACCIDENT WERE: THE ADVERSE TERRAIN AND HIGH DENSITY ALTITUDE.

 

Source: NTSB Aviation Accident Database

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